Gutting flue holes



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S. FOX.

MAGHINE FORUUTTING FLUE HOLES IN BOILER HEADS. No. 263,039. Patented Aug. 22; 1882.

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MAQHINE FOB. CUTTING PLUB HOLES IN BOILER HEADS. I No. 263,039. PatentedYAug ZZ 18 82.

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S. FOX.

MACHINE F011 CUTTING PLUE HOLES IN BOILER HEADS.

' No. 263,039. I Patented Aug22,l1882.

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UNITED STATES v PATENT OFFICE.

SAMSON FOX, OF LEEDS, COUNTY OF YORK, ENGLAND.

MACHINE FOR CUTTING FLUE-HOLES IN BOILER-HEADS.

SPECIFICATION forming part of Letters Patent No. 263,039, dated August 22, 1882,

I Application filed April 5,1882. (No model.)

' To all whom it may concern:

a top or plan view of my machine.

Be it known that I, SAMSON FOX, a citizen .of England, residing at the town of Leeds, in

the county of York, England, have invented certain new and useful Improvements in Machinery for the Manufacture of Flanged Plates for Steam-Boilers and for Outtin g Flue-Holes, &c.; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichjt appertains to make and use the same.

My improvementsarein machinery connected with cutting the holes through the front and back plates of steam-boilers previous to their being flanged for the flues to be fitted into.

In the accompanying drawings, Figure I is Fig. II is a side view, and Fig. Ill an end view, in elevation; and FigsJIV and V show a modification of the machine, in which the spindle carryin g the cutterhead works vertically, and other parts are arranged accordingly.

I use a suitable lathe headstock, 0, having a spindle, b, fitted with a worm-wheel, c, which is driven by a worm on the same shaft as the speed-cone d. On the spindle is a cutter-head, c, with two tool-holders, f and g, which are set npbyhand as the head revolves. thus cutting through the plate. Opposite the cutter-head is a face-plate, h, with bolt-holes cast in, fixed to two strong uprights, t and j, on the same bed as the head-stock a. On these uprights is a wrought-iron bracket, k, which can be raised or lowered at will, carrying a pin, Z, to mount the plates on. The center of this pin is on a line vertical to the center of the spindle. The plate is hung on the stud on the same center as it is intended'to flange round the outside on, and fixed to the face-plate h by bolts.

This gives a very ready mode of moving from hole to hole, they being all at a common ra-, dial distance from the center. After the holes have been flanged they are again put in this machine and mounted as before, for the purpose of having the edges of the said flange trimmed up and cut down to the proper height.

Another form of my improved machinery (shown in Figs. IV and V) I use vertically for cutting the edges of boiler-front plates after they have been flanged. Itconsists of a vertical spindle, a, carried by a good long top bearin g, b, connected to overhanging brackets c fastened to a corner-wall and having a good strong center pin, d, in its lower end, and taking into a center hole in the front plate to be operated on. On the lower part of this spindlea is a cross-arm, 6, having two movable'slides, f and g, carrying tool-boxes, which can be set at any required distance from the center of spindle. The top of the spindle is fitted into a large worm-wheel, h, and driven by a suitable worm, t, and speed-cone j.

The mode of fixing the work to be operated on is as follows: The center hole of boilerfront plate, which has been the guide for flanging the outside to, isplaced under the center pin of the vertical spindle,and the body of the boiler-front plate is secured to the holdingdown plates 70 by means of the bolts, thus leaving the flanging free to 'be operated on.

It will beseen that this mode of fixing saves much time over the ordinary Way of fastening to a lathe fact-plate and revolving the work.

Heretot'ore in machines of this class the plate to be operated upon has been fixed to a revolving-lathe face-plate, which requires a long time; but in my machine the work is fixed to a stationary plate, and needs no balancing, as in case of a lathe. Therefore,

What I claim is The combination of the head-stock a, spindle b, worm-wheel c, and cutter-head e, arr-an ged presence of two witnesses.

SAMSON FOX.

Witnesses:

JOSEPH HODGSON VEVERs, HENRY SKIRRoW LEUTY, Clerks to Messz'eurs Teale d2 Appleton, Solicitors,

Leeds, England. 

